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How do liquid-filled radiators work?
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The way that oil filled radiator heaters work is by electricity. This is used to heat up heating elements within the heater that causes the oil that fills the radiator to rise in temperature. This oil then causes the metal of the radiator itself to heat up releasing the heat into the room. Oil boils at a much higher temperature than water, about three times as high. This means that it will remain in liquid form even when it is on full power. The advantage of this is that the unit does not have to be built to withstand high pressures.
The heated oil retains heat for a long time which keeps the radiator and hence room warm for a long time. A lot of oil filled radiators are portable like the one in the picture. This means that rather than turning central heating on and incurring a large heating bill, it is possible to take the heater with you, say from the living room to the bedroom and just heat the area of the house that you are in.
this is for oil filled radiaters could not find others...
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